Dynamics of Evaporation of CsI Molecules from Individual (Cs(CsI)n)+ Clusters
Abstract
A brief review is first given of the different types of clusters and their synthesis. The results on the determination of the mechanisms of the evaporation of one and two CsI molecules from individual mass selected (Cs(CsI)n)+ clusters (made by sputtering techniques) are discussed in terms of their observed stabilities, their observed average kinetic energy released and its distribution during the evaporation process. It is found that the stability towards evaporation, rather than formation rates, is the origin of observing clusters with magic numbers. Furthermore, comparison with theoretical models showed that the evaporation process of Csl molecules from these clusters is statistical. Finally, it is shown that the evaporation of two Csl molecules involves the fission of a dimer rather than a sequential evaporation of two Csl monomers.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 21, 1992
- Accession Number
- ADA251272
Entities
People
- Hyun J. Hwang
- Mostafa El-Sayed
Organizations
- University of California, Los Angeles